Recycling process
AssigneeWorn Again Technologies Limited
InventorsAdam WALKER, Joshua E.S. REID, Lauri Kari Johannes HAURU
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Abstract
The present invention provides a process for separating cellulose from a feedstock, comprising the steps of: a) wetting the cellulose with a first solvent system to form wet cellulose; b) contacting the wet cellulose with a second solvent system to form a mixture; c) maintaining the mixture at a first temperature for a first period of time; d) maintaining the mixture at a second temperature for a second period of time to dissolve the cellulose; and e) removing the first and second solvent system containing the dissolved cellulose.
Claims33
A process for separating cellulose from a feedstock, comprising the steps of:
- a) wetting the cellulose with a first solvent system to form wet cellulose;
- b) contacting the wet cellulose with a second solvent system to form a mixture;
- c) maintaining the mixture at a first temperature for a first period of time;
- d) maintaining the mixture at a second temperature for a second period of time to dissolve the cellulose;
- and
- e) removing the first and second solvent system containing the dissolved cellulose.
(canceled)
(canceled)
A process for separating polyester and cellulose from a feedstock using a solvent system comprising a cyclic urea and an ionic liquid, comprising a carboxylic acid and an optionally substituted guanidine.
(canceled)
Dependencies are inferred from the claim text.